<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
        </el-breadcrumb>
        <el-card>
            <el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
            <el-table :data="roleslist" stripe>
                <el-table-column type="expand">
                    <template slot-scope="scope">
                        <el-row :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']" v-for="(item1, i1) in scope.row.children" :key="item1.id">
                            <el-col :span="6">
                                <el-tag closable @close="removeRightById(scope.row, item1.id)">{{item1.authName}}</el-tag>
                                <i class="el-icon-caret-right"></i>
                            </el-col>
                            <el-col :span="18">
                                <el-row :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']" v-for="(item2, i2) in item1.children" :key="item2.id">
                                    <el-col :span="8">
                                        <el-tag type="success" closable @close="removeRightById(scope.row, item2.id)">{{item2.authName}}</el-tag>
                                        <i class="el-icon-caret-right"></i>
                                    </el-col>
                                    <el-col :span="16">
                                        <el-tag type="warning" v-for="item3 in item2.children" :key="item3.id" closable @close="removeRightById(scope.row, item3.id)">{{item3.authName}}</el-tag>
                                    </el-col>
                                </el-row>
                            </el-col>
                        </el-row>
                    </template>
                </el-table-column>
                <el-table-column type="index" label="编号"></el-table-column>
                <el-table-column label="角色名称" prop="roleName"></el-table-column>
                <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
                <el-table-column label="操作">
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)">编辑</el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeRole(scope.row.id)">删除</el-button>
                        <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
                    </template>
                </el-table-column>
            </el-table>
        </el-card>
        <el-dialog
            title="添加角色"
            :visible.sync="addDialogVisible"
            width="50%"
            @close="addDialogClosed">
            <el-form :model="rolesForm" :rules="addRolesRules" ref="addRolesRef" label-width="100px">
                <el-form-item label="角色名称" prop="roleName">
                    <el-input v-model="rolesForm.roleName"></el-input>
                </el-form-item>
                <el-form-item label="角色描述" prop="roleDesc">
                    <el-input v-model="rolesForm.roleDesc"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addRoles">确 定</el-button>
            </span>
        </el-dialog>
        <el-dialog
            title="修改角色"
            :visible.sync="editDialogVisible"
            width="50%"
            @close="editDialogClosed">
            <el-form :model="editForm" :rules="editRolesRules" ref="editRolesRef" label-width="100px">
                <el-form-item label="角色名称" prop="roleName">
                    <el-input v-model="editForm.roleName"></el-input>
                </el-form-item>
                <el-form-item label="角色描述" prop="roleDesc">
                    <el-input v-model="editForm.roleDesc"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editRoles">确 定</el-button>
            </span>
        </el-dialog>
        <el-dialog
            title="分配权限"
            :visible.sync="setRightDialogVisible"
            width="50%" @close="setRightDialogClosed">
            <el-tree :data="rightslist" :props="treeProps" node-key="id" show-checkbox default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRightDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="alotsRights">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data () {
        return {
            roleslist: [],
            addDialogVisible: false,
            setRightDialogVisible: false,
            rolesForm: {
                roleName: '',
                roleDesc: ''
            },
            editForm: {},
            rightslist: [],
            defKeys: [],
            roleId: '',
            treeProps: {
                label: 'authName',
                children: 'children'
            },
            addRolesRules: {
                roleName: [
                    { required: true, message: '请输入角色名称', trigger: 'blur' }
                ],
                roleDesc: [
                    { required: true, message: '请输入角色描述', trigger: 'blur' }
                ]
            },
            editDialogVisible: false,
            editRolesRules: {
                roleName: [
                    { required: true, message: '请输入角色名称', trigger: 'blur' }
                ],
                roleDesc: [
                    { required: true, message: '请输入角色描述', trigger: 'blur' }
                ]
            }
        }
    },
    created () {
        this.getRoleList()
    },
    methods: {
        async getRoleList () {
            const { data: res } = await this.$http.get('roles')
            if (res.meta.status !== 200) return this.$message.error('获取角色列表失败！')
            this.roleslist = res.data
        },
        addDialogClosed () {
            this.$refs.addRolesRef.resetFields()
        },
        addRoles () {
            this.$refs.addRolesRef.validate(async valid => {
                if (!valid) return
                const { data: res } = await this.$http.post('roles', this.rolesForm)
                if (res.meta.status !== 201) {
                    this.$message.error('角色添加失败！')
                }
                this.$message.success('角色添加成功！')
                this.addDialogVisible = false
                this.getRoleList()
            })
        },
        async removeRole (id) {
            const removeResult = await this.$confirm('是否确认删除该角色？', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
            }).catch(err => err)
            if (removeResult !== 'confirm') return this.$message.info('取消了删除操作。')
            const { data: res } = await this.$http.delete('roles/' + id)
            if (res.meta.status !== 200) return this.$message.error('删除用户失败')
            this.$message.success('删除成功！')
            this.getRoleList()
        },
        async showEditDialog (id) {
            this.editDialogVisible = true
            const { data: res } = await this.$http('roles/' + id)
            if (res.meta.status !== 200) return this.$message.error('角色信息查询失败！')
            this.editForm = res.data
        },
        editRoles () {
            this.$refs.editRolesRef.validate(async valid => {
                if (!valid) return
                const { data: res } = await this.$http.put('roles/' + this.editForm.roleId, {
                    roleName: this.editForm.roleName,
                    roleDesc: this.editForm.roleDesc
                })
                if (res.meta.status !== 200) return this.$message.error('角色信息更新失败！')
                this.editDialogVisible = false
                this.getRoleList()
                this.$message.success('角色信息更新成功！')
            })
        },
        editDialogClosed () {
            this.$refs.editRolesRef.resetFields()
        },
        async removeRightById (role, id) {
            const confirmResult = await this.$confirm('是否删除该权限？', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消'
            }).catch(err => err)
            if (confirmResult !== 'confirm') return this.$message.info('取消删除')
            const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${id}`)
            if (res.meta.status !== 200) return this.$message.error('权限删除失败！')
            this.$message.success('删除成功！')
            role.children = res.data
        },
        async showSetRightDialog (role) {
            this.roleId = role.id
            const { data: res } = await this.$http.get('rights/tree')
            if (res.meta.status !== 200) return this.$message.error('权限获取失败！')
            this.rightslist = res.data
            this.getLeafKeys(role, this.defKeys)
            this.setRightDialogVisible = true
        },
        getLeafKeys (node, arr) {
            if (!node.children) return arr.push(node.id)
            node.children.forEach(item => this.getLeafKeys(item, arr))
        },
        setRightDialogClosed () {
            this.defKeys = []
        },
        async alotsRights () {
            const keys = [...this.$refs.treeRef.getCheckedKeys(), ...this.$refs.treeRef.getHalfCheckedKeys()]
            const idStr = keys.join(',')
            const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr })
            if (res.meta.status !== 200) return this.$message.error('权限分配失败！')
            this.$message.success('权限分配成功！')
            this.getRoleList()
            this.setRightDialogVisible = false
        }
    }
}
</script>

<style lang="less" scoped>
    .el-tag {
        margin: 15px;
    }

    .bdtop {
        border-top: 1px solid #eee;
    }

    .bdbottom {
        border-bottom: 1px solid #eee;
    }

    .vcenter {
        display: flex;
        align-items: center;
    }
</style>
